| 摘要 |
PURPOSE:To exactly lock parts by providing the first turning part with a coupler to stop the movement of a guide and a part to be locked and the second turning part with a coupler to be guided along the guide. CONSTITUTION:An operating lever 10 is held at the neutral position, and a lock lever is turned to the direction of E. Hereupon, even the second plate 25 is turned to the direction of E. Since a pin 28 is coupled with a guide groove 23 there, the first plate 21 is correspondingly turned to the direction of G, and grooves 31 and 32 are coupled with pins 33 and 34. In this case, the couplement of the groove 32 and the pin 34 interrupts rotation around the spherical bearing in the direction of right angle to the main shaft. The operating lever 10 with two freedoms can thus be surely locked. |
